Oar-lock bushing.



-.!. PALMER.

OAR LOCK BUSHING APPLICATION man Aue. 18. 1917.

` wvawo/L JERRY PALMER naman amarres isarisnar oisnrbnLD JERRY PALMER,0F KORELOCK, MICHIGAN.

OAR-LOCK RUSHING.

renners. Y

To all whom t may concern.' 'Be it known that l, JERRY PALMER, a citizenvof the United States, residing at Korelock, in the county of Ontonagonand State of Michigan, have invented certain new and useful lmprovementsin Dar-Lock Bushings, of which the following is a specication, referencebeing had to the accompanying drawings. K j

This invention relates to an improved oar lockbushing, andkhas for itsprimary object to provide a sectional bushing which `may be easily andquickly inserted within the lock and around the oar shaft so that whenthe oar is in operative position, allliabllity of the bushing sectionsbeing displaced or the possibility of the accidental displacement of theoar from the oar lock, is obviated. i l

lt is another and more yparticular object of the invention to provide abushing for oar locks consisting of two semicylindrical sections whichare insertible withinthe lock upon the relatively reduced portion of theoar shaft adjacent to the blade, the oar being subsequently movedlongitudinally through the bushing sections to its operative position,urging the bushing sections apart, said sections being then rigidlyfixed to the oar.

llt is a further general obj ect of the invention to provide a wearbushing for oars as above characterized, which is very simple in itsconstruction, may be inexpensively manufactured, and is designed for usein connectioilu with the ordinary form of open oar loc With the aboveand other objects in view, my invention consists in the novel featuresof construction, combination, and arrangement of parts to be hereinaftermore fully described, claimed, and illustrated in the accompanyingdrawing, in which,

Figure 1 is a perspective view illustrating the manner of arranging thebushing sections upon the oar within the oar lock- Fig. 2 is atransverse sectional view s owing the bushing sectionssecured to the oarin the operative position of the latter with respect to the oar lock;and

Fig. 3 is a section taken on the line 3-3 of Fig. 2.

Referring in detail to the drawings, 5 designates an oar lock of theordinary open type generally used, having oppositely bowed arms spacedapart at their upper ends. With these arms, the central pin or shankSpecification of Letters Patent.

` site ends with the `flanges 9.

ratentea npr.. so, rara Application led August 18, 1917. Serial No.186,971.

6 is integrally formed for engagement in the socket onthe gunwale of theboat. f

The improved wear bushing constituting the subject-matter of the presentapplication, includes two similar sections 7 preferably in the form ofbrass castings, each of which has a body portion 8 of semi-cylin` dricalform and is provided u on its oppooutward y projecting -S designates theshaft of the oar and B the blade thereof, and adjacent to the inner endof the blade, the shaft S is of reduced diameter, as shown at S. llnassembling the bushing upon the oar and within the oar lock, one bushingsection 7 is first arranged in the lower portion of the oar lock 5 withits concave side facing upwardly and the Hanges 9` disposed at oppositesides of the oar lock. rllhe oar shaft S is now arranged in the lockwith the reduced parts Sfthereof seated upon the bushing section. rlheother bushing section is now inserted through the open side of the oarlock, lt is to be noted that the body 8 of the bushing section is of amaximum diameter greater than the width" of the oar loclr opening and,therefore, it is" necessary to move the bushing section into and throughthis opening by a circumferential movement. rJFhediameter of the oarshaft portion S is such as to permit of this turning movement `of thebushing section through the open side of the oar lock until thelongitudinal edges of said section are engaged upon the opposed edges ofthe other bushing section which was first arranged in the lock. The oarshaft is now forced longitudinally between the bushing sections so thatthe larger portion thereof will move between said sections and force thesame in relatively opposite directions.v When the oar shaft has beenproperly located with its handle in the desired position with respect tothe oar lock, the two bushing sections are securely fastened to the oarshaft by means of the screws indicated at 10. It is, of course,understood that the sectional bushing is loose within the oar lock toenable the same to oscillate freely in the operation of the oar.

From the foregoing description, taken in connection with theaccompanying drawing, the construction, manner of operation, and severaladvantages of the invention will be the device, wear upon the oar shaftis obvikated, and when the oar is released, its retention in the oarlock is assured owing tothe fact that the bushing is of such diameterthat it cannot move outwardly through the' open oar lock. Thus,possibilityof loss of the oar is ,obyiat'ed., The brass bushing alsoconsiderably strengthens the oar at .its oint of engagement in the lock"so' as to minimize liabilityof vbreakage of the oar. The oar lockremains' at all' tines in connection with 1 the bushing adis carriedWitlji'the oar When the oars are removed or arranged in operai venientin practialuse. It is" also apparent ti've'; position upon the boat. Thedeyice,

While' 'relatively simple' in its construction, has' been found highlyserviceable and con seyeral features of the device, it is .to bevunderstood .thatthe same are susceptible of yconsioleralile*modification and' I, therefore, reserveftli'e privilege of adopting allsuch legitiniat'erchangs as nfi'ay be fairly! em'- bdiedjiithin the=spirit and scope.y of the HYeht-e'asfcland- ,i t

lLI'a/vi'ng thus fully described' my' invention, what' l desire toclaim' and secure by Letters Patent K y y y i y ,l l. ,Thev combinationwith an openyoarlock,

' Vof a mtal bushing'cnsisting of ytvifo similar sections each ofsemi-cylindrical forni and having a Width greater than the opening ofthe oar lock, said bushing sections being adapted for insertion into theoar lock by a circumferential movement and upon the relatively reducedportion of an oar shaft adjacent to the blade, and the oar shaft beingsubsequently moyed longitudinally between the bushing sections to apredetermined position with respect to the oar lock, and means forrigidly securing the bushing sections to the oar shaft. n

2. The combination with an open oar lock, of a bushing consisting of twosiniilarcast metal sectionseach of semifcylindrical forni and havingoutwardly projecting flanges on its opposite ends, said bushing sectionsbeing of a Width greater than the' opening of the oar lock and adapted4for insertion into thelock by circumferential movement through the openside thereof, said bushing sections being adapted for engagement uponthe relatively reduced portion' of the oar shaft adj acent to the bladeand said shaft then moved longitudinally between thebusliing' sectionsto a predetermined position with respect to the oar lock, and fasteningscrews to rigidly secure the bushing sections to the oar shaft.

In testimony whereof I hereuntoV aiiix my signature in the presence oftwo Witnesses.

. JERRY PALMER. Witnesses:

Jos. BRorHY,

MABEL C. SCOTT.

